摘要:
In order to record an interference fringe pattern in a recording layer of a medium, a plurality of laser beams are caused to interfere so as to form interference fringes in the recording layer; and during a time period over which the plurality of laser beams are caused to interfere, the following steps are continuously performed: (1) producing a signal varying according to a shift of a specific position in the recording layer; and (2) shifting a fringe-forming position in the recording layer by changing a phase of at least one of the laser beams or moving the recording layer based upon the signal produced in the step (1).
摘要:
In order to record an interference fringe pattern in a recording layer of a medium, a plurality of laser beams are caused to interfere so as to form interference fringes in the recording layer; and during a time period over which the plurality of laser beams are caused to interfere, the following steps are continuously performed: (1) producing a signal varying according to a shift of a specific position in the recording layer; and (2) shifting a fringe-forming position in the recording layer by changing a phase of at least one of the laser beams or moving the recording layer based upon the signal produced in the step (1).
摘要:
A holographic recording medium includes at least two substrates, and a recording layer provided between the substrates. The recording layer has a property such that an average refractive index lowers as irradiation with a beam proceeds. In the recording layer, an optical compensation rate C that is defined by C=(1−(n2/n1))/α satisfies 0.8≦C≦1.0, where α is a rate of thickness change of the recording layer before and after recording, n1 is an average refractive index before recording, and n2 is an average refractive index after recording.
摘要翻译:全息记录介质包括至少两个基板和设置在基板之间的记录层。 记录层具有这样的性质,使得当光束的照射进行时平均折射率降低。 在记录层中,由C =(1-(n2 / n1))/α定义的光学补偿率C满足0.8 <= C <1.0,其中α是之前记录层的厚度变化率 在记录之后,n1是记录前的平均折射率,n2是记录后的平均折射率。
摘要:
A holographic recording medium with a plurality of layers including a recording layer, on which are recorded interference patterns generated by interference of information light and reference light. The recording layer is attached to at least one adjacent layer with adhesive.
摘要:
The present invention aims to provide a composition for a holographic recording medium which allows for producing a disc medium filled with a photopolymer by a very simple method such as hot press method, with high dimensional precision, high uniformity and high productivity. The composition for a holographic recording medium contains a binder, a polymerizable polymer, and a photopolymerization initiator, wherein the binder is a polymer capable of forming a three-dimensional crosslinking structure by non-polymerization reaction. An aspect is preferable in which the polymer capable of forming a three-dimensional crosslinking structure by non-polymerization reaction is at least one of (A) a polymer which has an ionic group and formed a salt with the counterion of the ionic group and (B) a polymer having a crystal structure.
摘要:
The invention relates to a composition for optical recording including: a matrix polymer formed by mixing an epoxide compound and a curing agent; a polymerizable monomer having an unsaturated carbon bond; and a photopolymerization initiator, wherein the curing agent includes at least one selected from a carboxylic acid, a carboxylic anhydride, a polyamide, a blocked compound of carboxylic compound, a blocked compound of carboxylic anhydride compound, a blocked compound of polyamide compound, a carboxylic acid derivative, a carboxylic anhydride derivative, and a polyamide derivative; and to an optical recording medium in which the composition for optical recording is employed and a production method thereof.
摘要:
The present invention is to provide a method for treating an optical recording medium including irradiating a recording layer, which has recorded information, with a treatment light through a light diffusion member having a haze of 70% to 100%, wherein the optical recording medium contains at least the recording layer which records information using holography, and a device for treating an optical recording medium containing a light source for the treatment light, and the light diffusion member having a haze of 70% to 100% and disposed between the light source and the optical recording medium, wherein the recording layer is irradiated with the treatment light through the light diffusion member from the light source. The preferred aspects are that a half width of wavelength for an energy intensity of the treatment light is 5 nm to 700 nm; and the optical recording medium is a write-once read-many optical recording medium.
摘要:
The present invention provides a holographic recording composition and a holographic recording medium comprising a recording layer formed with the holographic recording composition. The holographic recording composition comprises a bifunctional or greater isocyanate, a polyfunctional alcohol comprising a bifunctional alcohol and a trifunctional or greater alcohol, a titanocene-based radical polymerization initiator, a bifunctional or greater acrylate monomer, and an amidine salt denoted by General Formula (1). In General Formula (1), R1, R2, and R3 each independently denote an alkyl group, aryl group, amino group, or acyl group, R1 and R2 may be bonded together to form a ring, R2 and R3 may be bonded together to form a ring, and A− denotes an anion.
摘要:
The present invention provides a holographic recording composition and a holographic recording medium comprising a recording layer formed with the holographic recording composition. The holographic recording composition comprises a bifunctional or greater isocyanate, a polyfunctional alcohol comprising a bifunctional alcohol and a trifunctional or greater alcohol, a titanocene-based radical polymerization initiator, a bifunctional or greater acrylate monomer, and an amidine salt denoted by General Formula (1). In General Formula (1), R1, R2, and R3 each independently denote an alkyl group, aryl group, amino group, or acyl group, R1 and R2 may be bonded together to form a ring, R2 and R3 may be bonded together to form a ring, and A− denotes an anion.
摘要:
The present invention provides a photosensitive composition containing (A) a photoreactive material, (B) an epoxy compound having an average epoxy equivalent of 230 g/eq. or less and having two or more epoxy groups in the molecule thereof, and (C) a thiol group-containing compound, which is used for forming a recording layer which records information using holography. In the photosensitive composition, preferably, (B) the epoxy compound reacts with (C) the thiol group-containing compound to form a polymerized product. The present invention also provides an optical recording medium having a recording layer formed of the photosensitive composition.